138842601 has 4 divisors (see below), whose sum is σ = 185123472. Its totient is φ = 92561732.

The previous prime is 138842593. The next prime is 138842617. The reversal of 138842601 is 106248831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138842601 - 2³ = 138842593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138842801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23140431 + ... + 23140436.

It is an arithmetic number, because the mean of its divisors is an integer number (46280868).

Almost surely, 2^138842601 is an apocalyptic number.

It is an amenable number.

138842601 is a deficient number, since it is larger than the sum of its proper divisors (46280871).

138842601 is an equidigital number, since it uses as much as digits as its factorization.

138842601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46280870.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 138842601 is about 11783.1490273186. The cubic root of 138842601 is about 517.8145470401.

The spelling of 138842601 in words is "one hundred thirty-eight million, eight hundred forty-two thousand, six hundred one".